Applied after drain or septic treatment, BioOne biological drain and septic system maintainer from One Biotechnology is designed to help maintain free-flowing drains, eliminate odors and reduce backups between scheduled pumpings. It doesn’t contain added enzymes or caustic agents, and has met the U.S. Environmental Protection Agency Design for the Environment challenge. It doesn’t emulsify FOG and move it down the line. Adding natural beneficial microbes can help customers avoid potentially expensive wastewater penalties, according to the manufacturer. 800/951-4246; www.1biotechnology.com.